So I just swapped the Radeon 7950 I had sitting in my 3,1 to the new 5,1 I got. Running Valley benchmarks, however, I'm seeing a dramatic drop in performance. On my 3,1 I got scores of ~1230/29.5 average FPS. And now I'm getting 830/19.8 on the same Extreme HD preset, which is basically what I got with my 5770 in the 3,1. No temps seem to be out of whack, so I'm wondering what the possible issue could be.